X3 - 4X2 - 45X
X(X2 - 4X - 45)
=============X is only common factor here.
(x + 5)(x - 8)
-(3x - 4)(x - 2)
It is (x - 9)*(x + 4)
x(x - 4)(x - 6)
(x + 7)(x - 6)
-(x + 13)(x - 2)
-(3x - 4)(x - 2)
(x + 5)(x - 8)
-2x(x + 3)(x + 2)
-(3x+4)(x+2)
(x + 7)(x - 6)
x(x - 1)(x - 13)
It is (x - 9)*(x + 4)
x(x + 5)(x - 7)
x(x - 4)(x - 6)
2x^2
It will be difficult to answer this question accurately without knowing "the expression below."